Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
sach thu » sach thue, sach thieu, sach tham
hanh dai » hanh tai, hanh dao, vanh dai
cao tuc » dao tuc, cao duc, cao suc
va hanh » van hanh, va thanh, va danh
sach tu » cach tu, sach ty, sach uu
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cao » va cac, va co, va dao
tuc va » thuc va, truc va, tuc xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach tu) OR (sach thu)) nang xa hoi. hieu va cao tuc va hanh dai ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach thu)) nang xa hoi. hieu va cao tuc va hanh dai ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) OR (sach thu)) nang xa hoi. hieu va cao tuc va hanh dai ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) OR (sach thu)) nang xa hoi. hieu va cao tuc va hanh dai ((cua triet) or (cua viet))*.